import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation

X = [0,10,20,30,40]
Y = [0,0,4,3,7]
X = np.array(X)
Y = np.array(Y)

fig = plt.figure()
ax = fig.add_subplot(111, autoscale_on=False, xlim=(-2, 2), ylim=(-2, 2))
ax.set_aspect('equal')
ax.grid()

